期刊
CHEMICAL ENGINEERING & TECHNOLOGY
卷 37, 期 7, 页码 1198-1204出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ceat.201300158
关键词
Asphaltene; Catalytic hydrogenation; Crude bio-oil; Upgraded bio-oil
资金
- National Natural Science Foundation of China [21006028, 21376084]
- Jiangsu Key Laboratory for Biomass Energy and Material Opening Foundation
The average molecular formula of asphaltene was calculated from the main functional groups of asphaltene determined by Fourier transform infrared spectroscopy, the average molecular weight found by gel filtration chromatography, and values of ultimate analysis. A series of average structure parameters were determined by H-1 NMR and C-13 NMR spectrum integrals, followed by establishing the structure models of asphaltene according to the Brown-Ladner method. Reduction of molecular weight of asphaltene was observed after bio-oil upgrading, and the oxygen-containing functional groups were apparently less than that of crude bio-oil while the number of aromatic rings was increased. The upgraded bio-oil had a lower molecular weight, lower oxygen content, and higher aromaticity compared with crude bio-oil.
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